Design of RBFN Controller Based Boost Type Vienna Rectifier for Grid-Tied Wind Energy Conversion System

Abstract

This paper presents a radial basis function network (RBFN) controller-based three-phase boost-type Vienna rectifier for a grid-tied wind energy conversion system. Boost-type Vienna rectifier is an ac/dc converter characterized by high power density and improved power factor in addition to maintaining a sinusoidal current with low total harmonic distortion at the input side. Such converter systems find its utility and application related to unidirectional power flow, such as data centers, telecommunication systems, and more appropriately for wind energy conversion systems. This paper involves the implementation of an RBFN-based control strategy for Vienna rectifier to ascertain the ability of the proposed strategy to obtain enhanced performance of a wind energy conversion system. The choice of the RBFN for the control of the rectifier system stems from its inherent capability to ensure better dynamic control notwithstanding its capability to reduce the design complexities during the network training phase. Simulation is carried out using MATLAB Simulink for a 1-kW standalone and grid-tied wind energy conversion system. This paper involves carrying out the detailed analysis and results for different wind velocities under standalone and grid-tied conditions.

Keywords

• Wind energy conversion system (WECS)
• PMSG (permanent magnet synchronous generator)
• Vienna rectifier
• RBFN
• DC-link voltage and grid side inverter (GSI)